Re: [Rubycocoa-talk] A potential bug to watch out for...

[Allison N. <dem...@ma...>]

The bug doesn't occur in all apps - just in the biggest app that I  
have written to date in RubyCocoa (naturally!), though as I said, in  
that app, it happens in numerous places (changing a selection in a  
group of objects, responding to a timer, serialising an object, etc  
etc etc).  I'm trying to find a nice small example that reproduces the  
bug reliably, but without luck so far.  I'll post it once I've found a  
good, reliable way of making things blow up.

Still, based on your experience, it's looking like MacRuby is the  
culprit.  This does make some sense...

Alli


Le 16 mai 09 à 22:57, Duncan McGregor a écrit :

> I've had that Xcode trace in my console (various addresses) for at  
> least the past few days, before and after updating to 10.5.7, so  
> maybe that isn't related to your [BUG].
>
> My app still passes all its tests without your 'object allocation  
> during garbage collection phase' issue, and, to pick one random  
> example that we both could run, so does CGPDFViewer. So maybe its  
> MacRuby?
>
> Cheers
>
> Duncan
> www.VelOCRaptor.com
>
> On 16 May 2009, at 21:40, Allison Newman wrote:
>
>> Hi everyone,
>>
>> I installed OS X 10.5.7 yesterday, as well as MacRuby 0.4.  Since  
>> then, whenever I run one of my RubyCocoa apps, I get the following  
>> bug:
>>
>> [BUG] object allocation during garbage collection phase
>> ruby 1.8.6 (2008-08-11) [universal-darwin9.0]
>>
>> The application has been stable for over 6 months.  Just to be  
>> sure, I recovered a version from 3 months ago off TimeMachine, and  
>> it still doesn't work, so the bug is definately coming from the  
>> environment, not the app.  Worse yet, the same bug appears in  
>> multiple different places in the app, not just in one particular  
>> part of the code, for example during a call to an NSEncoding  
>> method, or whilst handling an  NSTimer event.
>>
>> Checking the console logs, I now see this appearing all of the time  
>> for RubyCocoa apps, when it has never before appeared in the logs:
>> 16/05/09 22:33:20 [0x0-0xa60a6].com.apple.Xcode[2048]  
>> Xcode(2048,0xb0103000) malloc: free_garbage: garbage ptr =  
>> 0x45d8240, has non-zero refcount = 1
>>
>> I'll typically see this trace about 50 times during the execution  
>> of any RubyCocoa app.
>>
>> Apparently this is a bug in the Ruby interpretor.  I don't know  
>> which of these installs (10.5.7 or MacRuby) borked my machine, or  
>> indeed if it was an interaction beween the two of them, but be  
>> aware that you may have this problem before installing either.
>>
>> Alli
>>
>
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